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2 Sheets'-Sheet I. H. HOWARD.

Steam Heater. No. 60,732. Patented Jan. 1, 1867.

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N. PETERS. PHOTO-LITHOGRAPHER, WASHINGLON. D C,

2 Sheets-Sheet 2. .H. HOWARD.

Steam Heater.

No. 60,732. Patentedlanyl, 186 7.

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HENRY HOWARD, or SPRINGFIELD, MASSACHUSETTS, AssIeNon SELF AND RICHARDr. HAWKINS. A

Letters Patent No. 60,732, dated January 1, 1867.

IMPROVED HOT-WATER HEATING APPARATUS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, HENRY'HOWARD, of Springfield, Hampden county,Commonwealth of Massachusetts, have invented certain new and usefulImprovements in Hot-WaterI-Ieating Apparatus; and I do hereby declarethat the following is a full and exact description thereof, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon. In the drawings-.

Figure is a front view.

H Figure 2, avertical section and Figure 3, a plan view of my improvedapparatus.

My invention consists in a new and improved arrangement of boilers andradiators, and certain means for regulating the heat from the same,

I will first describe the construction of'my heating apparatus andafterwards my regulating arrangements- I place, one above another, anumber of boilers, so constructed that a large interior surface isexposed to the file, they being tubular and generally in the form of aparallelogram, but having tubular bars entending across from side toside, so arrangedasto make flues for the flame and heated air to drawthrough. On'the outside of this parallelogram are arranged theradiators, which are of a peduliar form, as will be hereafter described.I arrange these boilers in a brick case, A, enclosing them, forming achamber, leaving space for the radiators on all sides except the front.Underneath these boilers I place the fire-grate, B. C O C O are thetubular bars extending across from side to side of the boilers; and at DI place a damper, so arranged as when opened to allow the flame andheated air to pass directly up into the chimney through the opening, asindicated by the red arrows; but when shut, as is shown in black lines,passes down the flue E, and around up through thejlue F', as shown bythe black arrows.. When the damper is to be moved it is operated by a.handle, G. Besides the regulation of this damper, D, I have anothermethod used in connection with it formore fully regulating the draught.This consists of the two doors or dampers H K, the one, H, opening intofire-grate B, and admitting air up through the. fire, thus increasingthe heat by thedraught, and the other, K, opening underneath thechimney, so as to allow the cold air to draw directly up into thechimney, thus decreasing the draught and consequently the heat. Toaccomplish a perfect regulation of the heat by means of these doors, Iconnect them with either end of a lever, L, which is pivoted to thefrontwall of the chamber. In order to operate this lever and close one door,opening the other at the same time, I attach to one end of the lever ahollow globe, M, which is balanced by weights on the other end. To thisglobe I attach an elastic pipe, 1 which is also attached,

, to one of the boilers, so that Wvhen suflicient steam is generated toform the requisite pressure Water is forced up this elastic pipe, P,into therglobe M. In this case the globe becomes heavier, Weighing downthat end of. the lever, closingthe door H, and opening, by therise ofthe otherend of the lever in the same operation, the other door, K. Bythese means a perfect regulation of the draught is obtained. I form theradiators in a peculiar manner, as is shown in the drawings, at 3,having the tubular part B. larger than the tubular part S,

and having a partition placed centrally anddongitudlnally in the mouthof the radiator, where it is attached to the boiler, as shown by thedotted lines. In this device tlie water in the part S, havingproportionally to its bulk a larger surface exposed to'tne action of theair, becomes consequently cooled faster than the water in the:

part B, and by these means increases the circulation through theradiator. It Will be seen that my improvements are equally adaptable tosteam boilers and heaters as to the hot-Water heater described, and theadvantages I obtain are perfect regulation of the ,heat and by adding toor decreasing the number of boilers, I also adapt this apparatus to theheating of large or small houses; and, at the same time it is moreeasily packed and transported,.while a large surface is obtainedforftho. radiators, and also large interior surface exposed to the heatof the fire.

New, having described my. invention, what I claim as new, and desire tosecure by Letters Patent, is- 1. The arrangement of a number of boilersone above another in such a manner as to form fines by their sides, andhaving tubular bars connecting them, substantially in the manner and forthe purpose set; forth.

2. The combination with a boiler, by means of a flexible pipe, of a.hollow vessel, arranged and operating for the purpose of regulating thefire, substantially as described. w

3. The radiators, formed as described. having one part, B. larger thanthe other part, S,substantially as Wm set forth. HENRY HOWARD.

Witness-es J. B. GARDINER, EDWARD H- HYDE,

